Re: *_collapse_limit, geqo_threshold

Andres Freund <andres@anarazel.de> writes:
> I cannot reasonably plan some queries with join_collapse_limit set to 20. At 
> least not without setting the geqo limit very low and a geqo_effort to a low 
> value.
> So I would definitely not agree that removing j_c_l is a good idea. 

Can you show some specific examples?  All of this discussion seems like
speculation in a vacuum ...
        regards, tom lane